SYLVANIA SBT274-COPPER Over-Ear Bluetooth Headphones with Microphone (Copper)

• Bluetooth(R) Version 4.2;• Hands-free calling;• Working distance: 32.8ft;• Driver size: 40mm;• Freq range: 20Hz-20kHz;• Sensitivity: 95dB (-5dB);• Imp: 32ohm ;• 250mAh battery;• Up to 4 hours of battery life;• Includes charging cable;• Copper;